unreachable statement.

Im having quite a annoying problem with my program and was wondering if you guys could help me out and give me some advice. I keep getting this unreachable error in my GUI when i try to refer a string from a text box in order to make a file name out of the string type.

take a look please. this is at the bottom of my gui. my text box refers to the method but i can't seem to figure out why it wont send over the name.